perl5120delta says under Implicit stricturesUsing the use VERSION syntax with a version number greater or equal to 5.11.0 will lexically enable strictures just like use strict would do (in addition to enabling features.)
which is why my script template starts out with use 5.011; # implies strict + feature 'say'
and when (not if) someone asks where to find that odd (pun intended) version of perl, it's a good time to remind them that use specifies the minimum version.
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